EP 1294463 A1 20030326 - DEVICE FOR PURIFYING THERMOPLASTIC MATERIALS
Title (en)
DEVICE FOR PURIFYING THERMOPLASTIC MATERIALS
Title (de)
VORRICHTUNG ZUR REINIGUNG THERMOPLASTISCHEN MATERIALS
Title (fr)
DISPOSITIF D'EPURATION DE MATERIAU THERMOPLASTIQUE
Publication
Application
Priority
- DE 10031977 A 20000630
- DE 10103990 A 20010130
- EP 0107463 W 20010629
Abstract (en)
[origin: WO0200321A1] The device for removing solid impurities from thermoplastic synthetic materials comprises a housing (1) with a feed channel (3) for the material which is to be purified and a discharge channel (5) for purified material. A filter band (7) penetrates the flow path of the material in the housing (1) in a sealed manner between the feed channel (3) and the discharge channel (5); said filter band being able to be displaced in the longitudinal direction thereof and used to separate the solid impurities. A support body (11) with a plurality of through channels arranged next to each other for through flow of the purified material to the discharge channel (5) is disposed in the flow path on the side of the filter band (7) facing the discharge channel (5). Sealing means (27,29) are provided in the region of the filter band inlet (23) and in the region of the filter band outlet (25). The sealing means seal the filter band (7) in relation to the housing (1). The filter band (7) is continually or gradually advanced by means of a conveyor device (43). The sealing means of the filter band outlet (25) cool the impurity load (19) of the filter band (7) containing a proportion of thermoplastic material in an at least approximate manner until solidification occurs. A controllable blocking device (35) is disposed on the outlet (25) of the filter band, whereby said device modifies the size of the cross-section of the filter band outlet (25) and the size of the cross-section of the filter band (7) provided with the load of impurities (19) in order to block or release the advance movement of the filter band (7) in relation thereto.The blocking device can comprise a blocking piston (37) which controllably narrows the dimension of the outlet, or the blocking device can comprise a motor driven tool, e.g. a milling cutter, which reduces the cross-section of the impurity load to a value which is smaller than that of the cross-section of the filter band outlet (25).
IPC 1-7
IPC 8 full level
B01D 29/09 (2006.01); B01D 33/04 (2006.01); B01D 35/18 (2006.01); B29C 48/692 (2019.01); B29C 48/03 (2019.01)
CPC (source: EP)
B01D 29/096 (2013.01); B01D 29/6484 (2013.01); B01D 29/684 (2013.01); B01D 29/843 (2013.01); B01D 29/96 (2013.01); B01D 33/04 (2013.01); B01D 33/056 (2013.01); B01D 33/466 (2013.01); B01D 33/503 (2013.01); B01D 33/663 (2013.01); B01D 33/801 (2013.01); B01D 35/18 (2013.01); B29C 48/692 (2019.01); B29C 48/03 (2019.01)
Citation (search report)
See references of WO 0200321A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 0107463 W 20010629; EP 01967109 A 20010629